Explain the Vietnam war and how two long-term causes created political or economic tensions between the US and the USSR long term cause:
explanation:

     In 1965, after Khrushchev’s removal from power, the USSR  signed a defense treaty that would provide North Vietnam with financial aid, military  equipment and advisors.  Moscow now became North Vietnam’s main supplier.  In November  1968, the Soviet Union and North Vietnam signed a new set of military and economic  agreements.  The USSR agreed to supply deliveries of food, petroleum, transportation  equipment, iron and steel, other metals, fertilizes, arms, munitions and other commodities,  for strengthening North Vietnam’s defenses.  The causes of the Vietnam War were derived from the symptoms,  components and consequences of the Cold War.  The Vietnam War and active U.S.  involvement in the war began in 1954, though ongoing conflict in the region had stretched  back several  decades.  After the communist forces took power in the north, armed conflict  between northern and southern armies continued until a decisive the northern Viet Minh’s  decisive victory in the Battle of Dien Bien Phu in May 1954.  The French loss at the battle  ended almost a century of French colonial rule in Indochina.

( use double line spacing, 12 font and times new roman)

the answer is migration

i think they would live in caves or natural tunnels